| Name | CVE-2026-33195 |
| Description | Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, Active Storage's `DiskService#path_for` does not validate that the resolved filesystem path remains within the storage root directory. If a blob key containing path traversal sequences (e.g. `../`) is used, it could allow reading, writing, or deleting arbitrary files on the server. Blob keys are expected to be trusted strings, but some applications could be passing user input as keys and would be affected. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1132035 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| rails (PTS) | bullseye | 2:6.0.3.7+dfsg-2+deb11u2 | vulnerable |
| bullseye (security) | 2:6.0.3.7+dfsg-2+deb11u4 | vulnerable | |
| bookworm, bookworm (security) | 2:6.1.7.10+dfsg-1~deb12u2 | vulnerable | |
| trixie (security), trixie | 2:7.2.2.2+dfsg-2~deb13u1 | vulnerable | |
| forky | 2:7.2.3+dfsg-3 | vulnerable | |
| sid | 2:7.2.3.1+dfsg-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| rails | source | (unstable) | 2:7.2.3.1+dfsg-1 | 1132035 |
[trixie] - rails <no-dsa> (Minor issue)
[bookworm] - rails <no-dsa> (Minor issue)
https://github.com/rails/rails/security/advisories/GHSA-9xrj-h377-fr87
Fixed by: https://github.com/rails/rails/commit/9b06fbc0f504b8afe333f33d19548f3b85fbe655 (v8.1.2.1)
Fixed by: https://github.com/rails/rails/commit/a290c8a1ec189d793aa6d7f2570b6a763f675348 (v8.0.4.1)
Fixed by: https://github.com/rails/rails/commit/4933c1e3b8c1bb04925d60347be9f69270392f2c (v7.2.3.1)